import {FormControl} from '@angular/forms';

export function validateEmail(c: FormControl) {
  const EMAIL_REGEXP = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
  return EMAIL_REGEXP.test(c.value) ? null : {
      validateEmail: {
        valid: false
      }
    };
}
